Blade holder for razor sharpening machines



Nov. 22, 1932. T. G. M GiRR BLADE HOLDER FOR RAZOR SHARPENING MACHINES Filed March 7. 1927 [NVENTOR.. T/reaoore i 4/ 6? BY gr I A%QNEY5.

Patented Nov. 22, 19 32 UNITED) STA TnnonoRE e, lVICGIBR, p1 R ooKL-Yn, new YoRx, AssienoR 'ro MAsAzInERnrnii'r nG v 1 RAzoR oo PAnY, or NNEWYOVRK, 1v. Y.,' A ooRro ATIoN or new JnRsRr BLADE HOLDE FO AzoR SHARPENIING- MAoHINEs f Application filed- March 7,

This invention is a blade holder for razor sharpening machines and is intended, more particularly, to properly support single edged blades during the sharpening thereof.

The primary object of the present invention is to provide ajholdenespecially adapted to firmly grip and support unbacked,.single edged blades of the character employed in safety razors. V Speaking generally, the holder of this invention embodies a rigid back portion which carries two laterally extending opposed clamping j aws whichare relatively resilient. A blade slot is formed between the marginal edges of these jaws and is of normally less width than the thickness of the blades so that when the blades ar introduced into the slotthe jaws will be sprung apart and placed under sufficient stress to tightly grip the blades andhold them against inadvertent release. 1 T r 3 s :The blade slot is ofadepthappreciably less than the width ofthe individualblades and its base forms a shoulder against which the rear edges of theblades seat. p Inkpractice, one {the aws is preferably rigid and the other resilient. The r gid aw maybe integral with the rigid back portion, but I prefer to make both the rigid and resilient jaws, as well as the back portion separately, and thereafter assemble themtofor n the complete holder.v In this embodiment of the invention, the rigidr'back port-ion is chanjnelled along its forward edge toprojvidea seat in which therigid and resilient jawsare introduced and thereupon rivetedpermanently in position.-

In practice, the jaws may extenduniterruptedly throughout thelength of the holder, but, if desired,one or both of said jaws may be built up of arnumber of parts positioned side "by side longitudinally of the holder.

Itis of pronounced practical importance in a holder embodying the present invention to so construct'the holder that the blades will be gripped Zbetween clamping jaws while the rear edges of the blades seat againsta suitable non-yielding-shoulder which serves to hold the blades firmly against retracting r m he sha p n ng W e l This s the 1927. Serial No; 173,580.

sence of this invention and the invention.

not limited to detailsof. jaw construction,

. Features of the invention, other than those adverted to, will be apparent from the. here; inaft'er. detailed description and claims, when read in conjunction with the accompanying drawing.- f it p The accompanying drawing illustrates different practical embodiments of theinven- V V tion,.but the construction therein shown isto be understoodasillustrative, only,andnot as v defining the limits of theinvention. y

Figural is a'perspective' view showing a blade holder embodying this invention with the blades removed. Figure 2"is anend view shown in Figure 1. r r igure 3 is affragmentary perspective view illustrating-one endporti'onf of' the (holder withalblade in place thereinf elevation showing the tips of the clamping jaws. In full lines, the jaws are shown in. the positions which, they occupy when the blades are removed, and in dotted lines {I jaw is sprung away from the rigid jaw when the blade is introduced between said j aws.: Figure .5 is 'a perspectiye View showinga slightly modified form of the invention.

.Figure '6- isja section on thelin-es 6+6 and a I 4 i 65 oflthe holder as Referring' to the drawing, l designatesa;

rigidback plate or platelof the holder. In

practice, this back plate is preferably shaped for cooperationwiththe stationary guide-or shoe-of a blade sharpening machine, so that the said back plate 1 may beslid along said 7 I In the preferred form of constru tion shownin the drawing, the back plate 'lis pro,-

vided in its forward edge with agch'annel 2, in which the rear margins of the jaws 3-' and 4 are seated and firml and rigidly heldin [placeby rivets The jaws extend for an appreciable distance beyond the forward i F0 Figure 4 is an enlarged fragmentary .end

have shown the'mannerjinwhrch the resil ent edgel f tlne rigid back plate 't h yf are 5100 place by preferably externally beveled or tapered as clearly shown at 6 and 7 to reduce the dimension of their edges to a minimum in order ly fill the channel, i. e., their aggregate thick- 7,

ness is substantially equal to the width of the channel, so that when the'jaws are secured'in V the rivets 5, the back will be fixedly secured to said jaws;

'As further shownin Figure 2'," thearigid aw isprovided with arib 8,.which is formed on the inner face of saidj aw and extends longitudinallythereof in parallel relation to the free edge of the jaw. "The forward edge of this rib forms a'shoulder 8, which is spaced Y from the free'edge of the jaw a distance ZIP-r preciably less than the width'of the blades wi thwhich thevholder is ad'aptedfor cooperation. The inherent resiliency of the jaw 8 normally causes said jaw to seat upon the face of'the rib 8 and said rib is made,

in practice, to have a height slightly less than the. thickness of the blades, so that when the blades are introduced into" the blade" slot 9 andinto a position to rest against the shoul- ,de'r 8, said j aws' will be forced apart and the resilient jaw placed under sufficientv stress to properly gri the blades and holdthem in position- V V The inner faces oft-he jaws, rearwardlyof the shoulder 8,'may be of any suitableshape .without departing from this invention, as

the fundamental concept of the invention re; sides. in. the provision of the blade slot with an associated i shoulder. 1 However, f it is found, in practice, that the resilient j awmay,

to advantage, be undercut as'shown'at"10*in order to increase its resiliency. It "is also entirely-practical to cut away the resilient jaw at its exterior face insteadof its interior face for. the purpose of. increasing its resiliflency, but thisis optional. The jaws should be so formed that the thickness of the blade slot will normally be I slightly less than the thickness of-the blades andthe cooperatingsurface of said jaws forwardly of the shelf should be substantially parallelin order to insure efficient gripping of theblades, 1 c. U The normal relative positions of the jaws f3 is sprung away from the jaw 4, asshown are shown in full lines in Figure 4. Here it will'be seen that the jaw 3 normally rests on theface of the rib 8. However, when a blade is, introduced between the jaws, the jaw in dotted lines in Figure4,g to receive the :blade X. The resilient jaw is thus placed under suflicient stress to properly maintain the blade in position and to preclude its in advertent release.

In practice, the blades may be introduced into the holder in any suitable manner. For example, the outer ends of the jaws may be internally beveled or'rounded as shown at 11 in Figu'reG, so that the blades may be suc- --cessively slipped into cooperative relation with the jaws as indicated by the arrow in. Figure 3. However, ifiit'bedes'ired to insert the blades through the free endsof the jaws and in adirectionperpendicular to the shoulder 8, the outer edges of the jaws may also .be formed asshownin Figure 6.

In Figure l, theresilient jaw 3 is shown in one piece which extends the full length r V of the holders with slots 12 ex-tending from the free' edge-of saidfjaw toward therigid back and foranappreciable distance. These sl'otsare spaced aparta distance substantially equal'to the length of a blade,- so that slight variationsin' the thickness; of consecutive blades maybe properly compens'ated'for and will not interfere with the proper gripping of theblade's individually. Instead ofmaking the resilient jaw in one piece as shown,

. it may be divided into a succession Ofseparate jaws designated'3a in Figure 5; .This is an alternative construction and is optional.-

It will be apparent from the foregoing-detailed description that the holder of thisinvention is extremelysimple in construction; It may be economically manufactured and is thoroughly iefficientin its operation' {The advantage of employing a'sho'ulderagainst which the rear edges of the blades firmlyseat will be apparent tothose; skilled in the art. By the use of such' shoulder the blades are accurately positioned and are precluded from shifting during the sharpening'operavtions;v The blades' are held firmly in: place in the holder andmaybepaccurately guided through the shoe or guide of the sharpening machine.

The accompanying "drawing shows the holder constructedjtosupport four blades.

In practice, however, it maybe made to .support a greater or less number. The invention is therefore to beunderstood asfnotbeing' limited to exactdetails of constructiom-as'sho-wn in the drawings, but is tobefunderstood as fully ims. c.

Having thus fully-described the invention,

Letters'Patent'is: i V

1. A blade holder for sharpening, machines comprising an elongated frigid; back plate, and clamping jaws rigidly fixed to said back plate and of suflicient length or extent to hold a plurality of blades, one of'sai'd jaws having "edges of saidjaws will'be less than the thickcommensurate I with the "appended.

what I claim as new-andfdesiretoi'secure by ness of the blades to be inserted in the holder,

7 thus enabling the jaws to properly grip and hold the blades; one of said clamping jaws 7 being rigid and the other resilient, said rigid jaw extending uninterruptedly the whole length of the holder, the said resilient jaw being divided to aflord a plurality of clamp ing fingers adapted to engage the blades in dividually, thus adapting the holder to grip blades of slightly varying thicknesses properly.

2. A blade holder for sharpening machines comprising an elongated rigid back plate, and'clamping jaws rigidly fixed to said back plate and of suificient length'or extent to hold a plurality of blades, one of THEODORE G. MoGIRR. 

